TYPO3 Core

hi evreybody
how can i rename a file in server? I wanted to change an uploaded file with another file... i changed the contet of the old one into new file with below code:

$fileReference = $this->resourceFactory->getFileReferenceObject( $id);
       $file=$fileReference->getOriginalFile();
       $file->setContents($content);

i see the new file now in frontend but i want to change the name of file too? how can i do it?

i dont wanted to delete the file and add a new file beacuse i dont want to increase id in sys-table and etc.....